Halfway over the Pacific, I'm sitting in seat 6A, which is not the normal seat for me. Usually I'm on the upper deck, front row, right seat, monitoring the systems and instruments of this Boeing 747-400, but today is no ordinary day. We started this trip in Taipei, noon on an ordinary Tuesday for most people, but for a few of us, a very special one. Today's trip will be the last for B-16411, a Boeing 747-400 built in 1998…